In a Step Down Transformer, Turns Ratio is 5:1, the Primary Current is 10 A and the Secondary Current is

Answer: Option B. 50 A

In a step down transformer, turns ratio is 5:1, the primary current is 10 A and the secondary current is 50 A.

Solution

The transformer works on the principle of MMF balance.

I₁N₁=I₂N₂

I₁/I₂=N₁/N₂

Step down transformer turns ratio is 5.

N₁/N₂=5

The primary current (I₁) is 10 A. Secondary current (I₂) is 

I₂=I₁×N₁/N₂=10×5=50 A.

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